Chloroquine is used to prevent or treatâ malariaâ caused byâ mosquito bitesâ in countries where malaria is common.

Malariaâ parasitesâ can enter the body through theseâ mosquito bites, and then live in body tissues such as redâ blood cellsâ or theâ liver. Thisâ medicationâ is used to kill the malaria parasites living inside redâ blood cells.